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v0.18.1.txt
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.. _whatsnew_0181:
v0.18.1 (April ??, 2016)
------------------------
This is a minor bug-fix release from 0.18.0 and includes a large number of
bug fixes along several new features, enhancements, and performance improvements.
We recommend that all users upgrade to this version.
Highlights include:
.. contents:: What's new in v0.18.1
:local:
:backlinks: none
.. _whatsnew_0181.new_features:
New features
~~~~~~~~~~~~
.. _whatsnew_0181.enhancements:
Enhancements
~~~~~~~~~~~~
.. _whatsnew_0181.api:
API changes
~~~~~~~~~~~
- ``pandas.merge()`` and ``DataFrame.join()`` will show a ``UserWarning`` when merging/joining a single- with a multi-leveled dataframe (:issue:`9455`, :issue:`12219`)
.. _whatsnew_0181.deprecations:
Deprecations
^^^^^^^^^^^^
.. _whatsnew_0181.performance:
Performance Improvements
~~~~~~~~~~~~~~~~~~~~~~~~
.. _whatsnew_0181.bug_fixes:
Bug Fixes
~~~~~~~~~
- Bug in ``value_counts`` when ``normalize=True`` and ``dropna=True`` where nulls still contributed to the normalized count (:issue:`12558`)